Female high school student He Xiaoba disappeared mysteriously three days ago. A week later, her decomposed body was discovered by her classmate Du Zhichao in a small house in an abandoned garbage dump, and the police were called.
He Xiaoba's parents are unwilling to accept the fact and believe that their daughter was murdered. While investigating the case, detective Lu Lipuan accidentally met his college girlfriend, the school doctor Gu Hua.
Who is the murderer? Why did he kill He Xiaoba? Why did He Xiaoba and Du Zhichao go to the garbage dump in the first place... More and more questions have made the case far from being as simple as Lu Lipuan originally imagined. When a few people came to their senses, they had already fallen into a quagmire from which they could not escape.